SDR SWIA200514723

Service difficulty report · Servo · Cndair CL6002B19

Difficulty date: March 15, 2005
Submitted: March 18, 2005
Operation: Air carrier
Aircraft: N418SW
Make and model: Cndair CL6002B19
Aircraft serial: 7446
Aircraft time: 11,980 hours, 9,562 cycles
System (JASC): 2740 · Stabilizer Control System
Part: Servo
Condition: Malfunctioned
Location: Elevator
Stage of operation: CR
How discovered: O
Nature of condition: F
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING CRUISE FLIGHT AT FL290 A/C STARTED AN UNCONTROLLED DESCENT. THE AUTOPILOT DISENGAGED AND RECEIVED A AP NOSE DOWN MESSAGE. REPLACED BOTH CAPT'S AND F/O STAB TRIM SWITCHES. REPLACED ELEVATOR SERVO IAW MM 22-11-04. REPLACED ELEVATOR SERVO MOUNT IAW MM 22-11-14. COMPLIED WITH DETAILED INSPECTION OF HORIZONTAL STAB TRIM ACTUATOR IAW AMM TASK 27-42-01-220-801. NO DEFECTS NOTED. ALL SYSTEMS OPERATIONAL CHECK GOOD.